Köhler, Peter; Nehrbass-Ahles, Christoph; Schmitt, Jochen; Stocker, Thomas F; Fischer, Hubertus (2017): Continuous record of the atmospheric greenhouse gas methane (CH4), raw data (Version 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.871263, In supplement to: Köhler, P et al. (2017): A 156 kyr smoothed history of the atmospheric greenhouse gases CO2, CH4, and N2O and their radiative forcing. Earth System Science Data, 9(1), 363-387, https://doi.org/10.5194/essd-9-363-2017
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Köhler, Peter; Nehrbass-Ahles, Christoph; Schmitt, Jochen; Stocker, Thomas F; Fischer, Hubertus (2017): Continuous record of the atmospheric greenhouse gas methane (CH4), raw data (Version 2). PANGAEA, https://doi.org/10.1594/PANGAEA.876007
Related to:
Buizert, Christo; Adrian, Betty; Ahn, Jinho; Albert, Mary; Alley, Richard B; Baggenstos, Daniel; Bauska, Thomas K; Bay, Ryan C; Bencivengo, Brian B; Bentley, Charles R; Brook, Edward J; Chellman, Nathan J; Clow, Gary D; Cole-Dai, Jihong; Conway, Howard; Cravens, Eric; Cuffey, Kurt M; Dunbar, Nelia W; Edwards, Jon S; Fegyveresi, John M; Ferris, David G; Fitzpatrick, Joan J; Fudge, Tyler J; Gibson, Chris J; Gkinis, Vasileios; Goetz, Joshua J; Gregory, Stephanie; Hargreaves, Geoffrey M; Iverson, Nels; Johnson, Jay A; Jones, Tyler R; Kalk, Michael L; Kippenhan, Matthew J; Koffman, Bess G; Kreutz, Karl; Kuhl, Tanner W; Lebar, Donald A; Lee, James E; Marcott, Shaun A; Markle, Bradley R; Maselli, Olivia J; McConnell, Joseph R; McGwire, Kenneth C; Mitchell, Logan E; Mortensen, Nicolai B; Neff, Peter D; Nishiizumi, Kunihiko; Nunn, Richard M; Orsi, Anais J; Pasteris, Daniel R; Pedro, Joel B; Pettit, Erin C; Buford Price, Paul; Priscu, John C; Rhodes, Rachael H; Rosen, Julia L; Schauer, Andrew J; Schoenemann, Spruce W; Sendelbach, Paul J; Severinghaus, Jeffrey P; Shturmakov, Alexander J; Sigl, Michael; Slawny, Kristina R; Souney, Joseph M; Sowers, Todd A; Spencer, Matthew K; Steig, Eric J; Taylor, Kendrick C; Twickler, Mark S; Vaughn, Bruce H; Voigt, Donald E; Waddington, Edwin D; Welten, Kees C; Wendricks, Anthony W; White, James W C; Winstrup, Mai; Wong, Gifford J; Woodruff, Thomas E (2015): Precise interpolar phasing of abrupt climate change during the last ice age. Nature, 520(7549), 661-665, https://doi.org/10.1038/nature14401
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Dlugokencky, Edward J; Lang, Patricia M; Mund, John; Crotwell, Andy; Crotwell, Molly; Thoning, Kirk W: Atmospheric Methane Dry Air Mole Fractions from the NOAA ESRL Carbon Cycle Cooperative Global Air Sampling Network, 1983-2015. Version: 2016-07-07 - ftp://aftp.cmdl.noaa.gov/data/trace_gases/ch4/flask/surface/ - ftp://aftp.cmdl.noaa.gov/data/trace_gases/ch4/flask/surface/ch4_spo_surface-flask_1_ccgg_month.txt, hdl:10013/epic.51033.d001
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Mitchell, Logan E; Brook, Edward J; Sowers, Todd A; McConnell, Joseph R; Taylor, Kendrick C (2011): Multidecadal variability of atmospheric methane, 1000–1800 C.E. Journal of Geophysical Research, 116(G2), https://doi.org/10.1029/2010JG001441
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Coverage:
Median Latitude: -77.825333 * Median Longitude: 31.024333 * South-bound Latitude: -90.000000 * West-bound Longitude: -112.086000 * North-bound Latitude: -66.733330 * East-bound Longitude: 123.350000
Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00
Minimum Elevation: 1390.0 m * Maximum Elevation: 3233.0 m
Event(s):
EDC (EPICA Dome C) * Latitude: -75.100000 * Longitude: 123.350000 * Date/Time Start: 1993-01-01T00:00:00 * Date/Time End: 2004-12-31T00:00:00 * Elevation: 3233.0 m * Recovery: 3300 m * Location: Dome C, Antarctica * Campaign: Dome C * Method/Device: Ice drill (ICEDRILL) * Comment: Drill site is 56 km from the site of a previous Dome C core that provided records extending into the last glacial period, and 560 km from the site of the Vostok cores. The completion of the Dome C core was delayed when the first drilling became stuck at 788 m in 1999 (EDC96).
Law_Dome * Latitude: -66.733330 * Longitude: 112.833330 * Elevation: 1390.0 m * Location: Antarctica * Method/Device: Ice drill (ICEDRILL)
South_Pole * Latitude: -90.000000 * Longitude: 0.000000 * Elevation: 2835.0 m * Location: South Pole * Campaign: Ice_core_diverse * Basis: Sampling/drilling ice * Method/Device: Ice drill (ICEDRILL)
Comment:
Final data set of data selection with n=4182 entries. Data reaches back until 799472 BP, since it contains for the later part all CH4 data from the EDC ice core. However, for the spline calculation, only data younger than 156.3 kyr BP data are taken (n=2990) to have a time series that goes as far back as the CO2 time series. Data with event/site "Law Dome" have been measured at various different sites, see original papers for details.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Köhler, Peter | |||
| 2 | AGE | Age | ka BP | Köhler, Peter | Geocode | |
| 3 | Methane, dry-air mole fraction | CH4 | nmol/mol | Köhler, Peter | nmol/mol = ppb | |
| 4 | Methane, dry-air mole fraction, standard deviation | CH4 std dev | ± | Köhler, Peter | 1-sigma uncertainty (ppb) | |
| 5 | Reference/source | Reference | Köhler, Peter |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
12546 data points
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